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Location: 19 km N from Mount Isa, Queensland, Australia
Private Mail Bag 6Mount IsaQueensland, Australia4825
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George Fisher Mine (previously Hilton mine) is an underground zinc-lead-silver mine. It has two separate mining areas. The older Hilton mine is now known as George Fisher South and the newer mining area is George Fisher North (previously Hilton North). The George Fisher orebody is an economic sulphide mineralisation. It is distinct from the nearby Mount Isa deposit due to its lack of breccia-hosted copper mineralisation. The deposit is composed of a series of 11 stratiform orebodies striking near N-S and dipping west between 30°-90°.Lead-zinc-silver mineralisation occurs in galena and sphalerite-rich bedding parallel horizons in dolomitic and variably carbonaceous pyritic shales and siltstones. Orebody and structural interpretation, modelling and classification of the mineral resource was completed based on additional geological information and improved geological modelling methodologies.Handlebar Hill Open CutThe Handlebar Hill Open Cut Mineral Resource is located up-dip from and is additional to the George Fisher South Mineral Resource. The geological model and Mineral Resource estimate was updated in 2024, and an updated pit optimisation undertaken with updated recoveries and economic assumptions. As a result, a new RF1 pit shell was used to report the Mineral Resource estimate. The previously reported oxide portion of the Mineral Resource has been removed due to revised assumptions with regards to prospects of economic metal recovery. Lead-zinc-silver mineralisation occurs within galena- and sphalerite-rich, bedding-parallel horizons hosted in dolomitic, variably carbonaceous pyritic shales and siltstones.
